1 /* 2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef APICast_h 27 #define APICast_h 28 29 #include "JSAPIValueWrapper.h" 30 #include "JSGlobalObject.h" 31 #include "JSValue.h" 32 #include <wtf/Platform.h> 33 #include <wtf/UnusedParam.h> 34 35 namespace JSC { 36 class ExecState; 37 class PropertyNameArray; 38 class JSGlobalData; 39 class JSObject; 40 class JSValue; 41 } 42 43 typedef const struct OpaqueJSContextGroup* JSContextGroupRef; 44 typedef const struct OpaqueJSContext* JSContextRef; 45 typedef struct OpaqueJSContext* JSGlobalContextRef; 46 typedef struct OpaqueJSPropertyNameAccumulator* JSPropertyNameAccumulatorRef; 47 typedef const struct OpaqueJSValue* JSValueRef; 48 typedef struct OpaqueJSValue* JSObjectRef; 49 50 /* Opaque typing convenience methods */ 51 52 inline JSC::ExecState* toJS(JSContextRef c) 53 { 54 ASSERT(c); 55 return reinterpret_cast<JSC::ExecState*>(const_cast<OpaqueJSContext*>(c)); 56 } 57 58 inline JSC::ExecState* toJS(JSGlobalContextRef c) 59 { 60 ASSERT(c); 61 return reinterpret_cast<JSC::ExecState*>(c); 62 } 63 64 inline JSC::JSValue toJS(JSC::ExecState* exec, JSValueRef v) 65 { 66 ASSERT_UNUSED(exec, exec); 67 ASSERT(v); 68 #if USE(JSVALUE32_64) 69 JSC::JSCell* jsCell = reinterpret_cast<JSC::JSCell*>(const_cast<OpaqueJSValue*>(v)); 70 if (!jsCell) 71 return JSC::JSValue(); 72 if (jsCell->isAPIValueWrapper()) 73 return static_cast<JSC::JSAPIValueWrapper*>(jsCell)->value(); 74 return jsCell; 75 #else 76 return JSC::JSValue::decode(reinterpret_cast<JSC::EncodedJSValue>(const_cast<OpaqueJSValue*>(v))); 77 #endif 78 } 79 80 inline JSC::JSValue toJSForGC(JSC::ExecState* exec, JSValueRef v) 81 { 82 ASSERT_UNUSED(exec, exec); 83 ASSERT(v); 84 #if USE(JSVALUE32_64) 85 JSC::JSCell* jsCell = reinterpret_cast<JSC::JSCell*>(const_cast<OpaqueJSValue*>(v)); 86 if (!jsCell) 87 return JSC::JSValue(); 88 return jsCell; 89 #else 90 return JSC::JSValue::decode(reinterpret_cast<JSC::EncodedJSValue>(const_cast<OpaqueJSValue*>(v))); 91 #endif 92 } 93 94 inline JSC::JSObject* toJS(JSObjectRef o) 95 { 96 return reinterpret_cast<JSC::JSObject*>(o); 97 } 98 99 inline JSC::PropertyNameArray* toJS(JSPropertyNameAccumulatorRef a) 100 { 101 return reinterpret_cast<JSC::PropertyNameArray*>(a); 102 } 103 104 inline JSC::JSGlobalData* toJS(JSContextGroupRef g) 105 { 106 return reinterpret_cast<JSC::JSGlobalData*>(const_cast<OpaqueJSContextGroup*>(g)); 107 } 108 109 inline JSValueRef toRef(JSC::ExecState* exec, JSC::JSValue v) 110 { 111 #if USE(JSVALUE32_64) 112 if (!v) 113 return 0; 114 if (!v.isCell()) 115 return reinterpret_cast<JSValueRef>(asCell(JSC::jsAPIValueWrapper(exec, v))); 116 return reinterpret_cast<JSValueRef>(asCell(v)); 117 #else 118 UNUSED_PARAM(exec); 119 return reinterpret_cast<JSValueRef>(JSC::JSValue::encode(v)); 120 #endif 121 } 122 123 inline JSObjectRef toRef(JSC::JSObject* o) 124 { 125 return reinterpret_cast<JSObjectRef>(o); 126 } 127 128 inline JSObjectRef toRef(const JSC::JSObject* o) 129 { 130 return reinterpret_cast<JSObjectRef>(const_cast<JSC::JSObject*>(o)); 131 } 132 133 inline JSContextRef toRef(JSC::ExecState* e) 134 { 135 return reinterpret_cast<JSContextRef>(e); 136 } 137 138 inline JSGlobalContextRef toGlobalRef(JSC::ExecState* e) 139 { 140 ASSERT(e == e->lexicalGlobalObject()->globalExec()); 141 return reinterpret_cast<JSGlobalContextRef>(e); 142 } 143 144 inline JSPropertyNameAccumulatorRef toRef(JSC::PropertyNameArray* l) 145 { 146 return reinterpret_cast<JSPropertyNameAccumulatorRef>(l); 147 } 148 149 inline JSContextGroupRef toRef(JSC::JSGlobalData* g) 150 { 151 return reinterpret_cast<JSContextGroupRef>(g); 152 } 153 154 #endif // APICast_h 155